M300 Steel

Ideal for automotive tooling applications, such as High Pressure Die Cast (HPDC) inserts, tooling inserts, tire sipes & molds, & other high strength components.

Material & Process Capability

M300 Tool Steel is an ultra-low carbon alloy with very high strength & hardness properties derived from intermetallic compounds rather than carbon content. The material is comprised mainly of nickel, with cobalt, molybdenum, & titanium as secondary intermetallic alloying metals.

It is ideal for tooling applications such as High Pressure Die Cast (HPDC) inserts, injection molding, and other types of tooling.

The Velo3D fully integrated manufacturing solution uniquely enables companies to build the parts they need without compromising design or quality – resulting in complex parts higher in performance than traditional casting techniques or other additive methods.

General Process

This data sheet specifies the expected mechanical properties and characteristics of this alloy when manufactured on a Velo3D Sapphire System. All data is based on parts built using Velo3D standard 50 μm layer thickness parameters, using Praxair FE-339-3, a Velo3D-approved powder. Parts built from M300 on a Sapphire System can be heat treated like those manufactured by other methods.

Sapphire 1MZ
Sapphire XC
Sapphire XC 1MZ
Typical Volume Rate1, cc/hourup to 40up to 160
Density, g/cc (lbs/cubic in)8.0 (0.29)
Relative Density, percent99.9+
Surface Finish2, Sa, μm (μin)<15 (590) for angles >25° from horizontal

Mechanical Properties at Room Temperature

As PrintedAfter Heat Treatment 14After Heat Treatment 25
Property3MeanMean -3σMeanMean -3σMeanMean -3σ
Modulus of Elasticity, GPa (msi)130 (18.9)105 (15.2)170 (24.7)160 (23.2)165 (23.9)145 (21.0)
Ultimate Tensile Strength, MPa (ksi)1015 (147.3)995 (144)1490 (216.2)1470 (213.3)1295 (187.9)1280 (185.7)
Yield (0.2% Offset), MPa (ksi)800 (116)780 (113)1280 (185.7)1265 (183.5)860 (125)805 (117)
Elongation At Break, percent181415122117
Charpy V-notch, J644311182215
Hardness, HRC292543403735
1. Geometry-dependent. 2. Depends on orientation and process selected. 3. All specimens were printed in argon atmosphere and tested using ASTM E8/E8M-22, ASTM
E23-18, or ASTM E18-22. Mechanical & tensile samples printed in vertical orientation & machined. 4. Solution at 850°C, 2 hours and age 600°C, 6 hours. 5. Solution at
850°C, 2 hours and age 650°C, 3 hours. 6. Charpy blocks were printed in the XY direction and machined.

DS-M300.EN.2022-09-01.v-0-2.U.USL 0905-26166_01 2022-09-01. Specifications are subject to change without notice. ©2022 Velo3D, Inc. All rights reserved. Velo, Velo3D, Sapphire, and Intelligent Fusion are registered US trademarks and Assure, Flow, and Without Compromise are trademarks of Velo3D, Inc. All other product or company names may be trademarks and/or registered trademarks of their respective owners.